/* CSS Variables untuk tema futuristik */
:root {
  --bg-dark: #0a0f1f; /* Biru sangat gelap */
  --bg-card: #10172d; /* Biru gelap untuk card */
  --primary-blue: #3a7dff; /* Biru cerah dari logo */
  --glow-blue: rgba(58, 125, 255, 0.5);
  --text-primary: #e0e0e0; /* Putih keabuan */
  --text-secondary: #a0a0a0; /* Abu-abu */
  --font-family: "Poppins", sans-serif;
  --border-radius: 8px;
  --card-border: 1px solid rgba(255, 255, 255, 0.1);
}

/* Reset dan Gaya Dasar */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 20px;
}

h1,
h2,
h3 {
  font-weight: 600;
}

h1 {
  font-size: 3rem;
  margin-bottom: 1rem;
}
h2 {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: 3rem;
}

section {
  padding: 6rem 0;
}

/* Header dan Navigasi */
header {
  background-color: rgba(10, 15, 31, 0.8);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--card-border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
  color: var(--text-primary);
  font-weight: 600;
  font-size: 1.2rem;
}

.logo img {
  width: 40px;
  height: 40px;
  margin-right: 10px;
}

nav ul {
  list-style: none;
  display: flex;
  gap: 2rem;
}

nav ul li a {
  text-decoration: none;
  color: var(--text-secondary);
  transition: color 0.3s;
}

nav ul li a:hover {
  color: var(--text-primary);
}

/* Tombol Call to Action (CTA) */
.cta-button {
  text-decoration: none;
  background-color: var(--primary-blue);
  color: #fff;
  padding: 10px 20px;
  border-radius: var(--border-radius);
  font-weight: 600;
  transition: all 0.3s ease;
  box-shadow: 0 0 15px var(--glow-blue);
}

.cta-button:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 25px var(--glow-blue);
}

.cta-button.large {
  font-size: 1.1rem;
  padding: 15px 30px;
}

.cta-button.outline {
  background-color: transparent;
  border: 1px solid var(--primary-blue);
  color: var(--primary-blue);
  box-shadow: none;
}

.cta-button.outline:hover {
  background-color: var(--primary-blue);
  color: #fff;
}

/* Hero Section */
#hero {
  text-align: center;
  padding-top: 8rem;
  padding-bottom: 8rem;
}

#hero p {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto 2rem;
}

/* Grid untuk Fitur, Harga, Testimoni */
.fitur-grid,
.harga-grid,
.testimoni-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

/* Card Styling */
.fitur-card,
.harga-card,
.testimoni-card {
  background-color: var(--bg-card);
  padding: 2rem;
  border-radius: var(--border-radius);
  border: var(--card-border);
  transition: transform 0.3s, box-shadow 0.3s;
}

.fitur-card:hover,
.harga-card:hover,
.testimoni-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.fitur-card h3 {
  color: var(--primary-blue);
  margin-bottom: 1rem;
}

/* Harga Card */
.harga-card {
  text-align: center;
}
.harga-card h3 {
  font-size: 1.5rem;
}
.harga-card .harga {
  font-size: 2.5rem;
  font-weight: 700;
  margin: 1rem 0;
}
.harga-card .per-bulan {
  font-size: 1rem;
  color: var(--text-secondary);
}
.harga-card ul {
  list-style: none;
  margin: 2rem 0;
  text-align: left;
}
.harga-card ul li {
  margin-bottom: 1rem;
}
.harga-card.featured {
  border-color: var(--primary-blue);
  transform: scale(1.05);
  position: relative;
}
.harga-card .badge {
  position: absolute;
  top: -15px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--primary-blue);
  color: #fff;
  padding: 5px 15px;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* Testimoni Card */
.testimoni-card blockquote {
  font-size: 1.1rem;
  font-style: italic;
  border-left: 3px solid var(--primary-blue);
  padding-left: 1rem;
  margin-bottom: 1.5rem;
}
.author {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.author img {
  width: 60px;
  height: 60px;
  border-radius: 50%;
}
.author h4 {
  margin: 0;
}
.author p {
  margin: 0;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Footer */
footer {
  border-top: var(--card-border);
  padding: 4rem 0 2rem 0;
  margin-top: 4rem;
  background-color: var(--bg-card); /* Sedikit beda warna agar menonjol */
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

.footer-column .logo {
  margin-bottom: 1rem;
  display: inline-block; /* Agar margin-bottom bekerja */
}

.footer-column .tagline {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1.5rem;
}

.footer-column h4 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.footer-column ul {
  list-style: none;
}

.footer-column ul li {
  margin-bottom: 0.75rem;
}

.footer-column ul li a {
  text-decoration: none;
  color: var(--text-secondary);
  transition: color 0.3s ease;
}

.footer-column ul li a:hover {
  color: var(--primary-blue);
}

.social-links a {
  display: inline-flex;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--card-border);
  border-radius: 50%;
  color: var(--text-secondary);
  text-decoration: none;
  margin-right: 0.5rem;
  transition: all 0.3s ease;
}

.social-links a:hover {
  color: #fff;
  background-color: var(--primary-blue);
  border-color: var(--primary-blue);
}

.footer-bottom {
  border-top: var(--card-border);
  padding-top: 1.5rem;
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Penyesuaian Responsif untuk Footer */
@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: repeat(2, 1fr); /* Jadi 2 kolom di tablet */
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr; /* Jadi 1 kolom di mobile */
    text-align: center;
  }
  .footer-column .logo {
    justify-content: center;
  }
  .social-links {
    justify-content: center;
    display: flex;
  }
}